static void Main(string[] args)
{
Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.Idle;
#if DEBUG
Trace.Listeners.Add(new ConsoleTraceListener());
#endif
if (!ProcessArgs(args) || !ValidateArgs())
{
return;
}
var inpmap = Bitmap.FromFile(InputImage) as Bitmap;
var outmap = new Bitmap(inpmap.Width, inpmap.Height, PixelFormat.Format32bppArgb);
using (InputBitmap = new LockBitmap(inpmap))
using (OutputBitmap = new LockBitmap(outmap))
{
InputBitmap.LockBits();
OutputBitmap.LockBits();
RenderZoom(inpmap);
}
outmap.Save(OutputImage);
}
static Color GetExtendedPixel(LockBitmap b, int x, int y)
{
int w = b.Width - 1;
int h = b.Height - 1;
int bx, by;
if (y < 0)
{
by = 0;
}
else if (y > h)
{
by = h;
}
else
{
by = y;
}
if (x < 0)
{
bx = 0;
}
else if (x > w)
{
bx = h;
}
else
{
bx = x;
}
return(b.GetPixel(bx, by));
}
static Color GetAliasedColor(LockBitmap lb, int x, int y)
{
Color
c00 = GetExtendedPixel(lb, x - 1, y - 1)
, c01 = GetExtendedPixel(lb, x + 0, y - 1)
, c02 = GetExtendedPixel(lb, x + 1, y - 1)
, c10 = GetExtendedPixel(lb, x - 1, y + 0)
, c11 = GetExtendedPixel(lb, x + 0, y + 0)
, c12 = GetExtendedPixel(lb, x + 1, y + 0)
, c20 = GetExtendedPixel(lb, x - 1, y + 1)
, c21 = GetExtendedPixel(lb, x + 0, y + 1)
, c22 = GetExtendedPixel(lb, x + 1, y + 1)
;
#if !MEMOIZE
double d1 = 1.0 / 16.0;
double d2 = 2.0 / 16.0;
double d4 = 4.0 / 16.0;
double a =
d1 * c00.A + d2 * c01.A + d1 * c02.A
+ d2 * c10.A + d4 * c11.A + d2 * c12.A
+ d1 * c20.A + d2 * c21.A + d1 * c22.A
;
double r =
d1 * c00.R + d2 * c01.R + d1 * c02.R
+ d2 * c10.R + d4 * c11.R + d2 * c12.R
+ d1 * c20.R + d2 * c21.R + d1 * c22.R
;
double g =
d1 * c00.G + d2 * c01.G + d1 * c02.G
+ d2 * c10.G + d4 * c11.G + d2 * c12.G
+ d1 * c20.G + d2 * c21.G + d1 * c22.G
;
double b =
d1 * c00.B + d2 * c01.B + d1 * c02.B
+ d2 * c10.B + d4 * c11.B + d2 * c12.B
+ d1 * c20.B + d2 * c21.B + d1 * c22.B
;
#else
double a =
AccessMemoize(1, c00.A) + AccessMemoize(2, c01.A) + AccessMemoize(1, c02.A)
+ AccessMemoize(2, c10.A) + AccessMemoize(4, c11.A) + AccessMemoize(2, c12.A)
+ AccessMemoize(1, c20.A) + AccessMemoize(2, c21.A) + AccessMemoize(1, c22.A)
;
double r =
AccessMemoize(1, c00.R) + AccessMemoize(2, c01.R) + AccessMemoize(1, c02.R)
+ AccessMemoize(2, c10.R) + AccessMemoize(4, c11.R) + AccessMemoize(2, c12.R)
+ AccessMemoize(1, c20.R) + AccessMemoize(2, c21.R) + AccessMemoize(1, c22.R)
;
double g =
AccessMemoize(1, c00.G) + AccessMemoize(2, c01.G) + AccessMemoize(1, c02.G)
+ AccessMemoize(2, c10.G) + AccessMemoize(4, c11.G) + AccessMemoize(2, c12.G)
+ AccessMemoize(1, c20.G) + AccessMemoize(2, c21.G) + AccessMemoize(1, c22.G)
;
double b =
AccessMemoize(1, c00.B) + AccessMemoize(2, c01.B) + AccessMemoize(1, c02.B)
+ AccessMemoize(2, c10.B) + AccessMemoize(4, c11.B) + AccessMemoize(2, c12.B)
+ AccessMemoize(1, c20.B) + AccessMemoize(2, c21.B) + AccessMemoize(1, c22.B)
;
#endif
return(Color.FromArgb((int)a, (int)r, (int)g, (int)b));
}